Daily Work OrganizerFriday Question of the Day: What do waves transfer?

How do you identify transverse and longitudinal waves?

Do Now:

1.What are things that travel by wave?2.What do waves have to do with energy?

Agenda: Homework

Homework:Reading Log 14: pg 122-124Test Corrections & Survey Finish worksheets

Jobs•PowerPoint Master •2 Fantastic Student to handback Homework

•Whiteboard eraser!

Waves

Why do we care?Waves are all around us all the time, even if we can’t see them.

Waves not only explain surfing, but they also explain earthquakes, sound, and one of the most mysterious phenomena on Earth-light

What do Waves Do?Move energy through matter or space

Two Types of WavesMechanical Waves need matter (medium) to travel through

Electromagnetic Waves can travel through empty space

Mechanical Waves

water

airsolids

Mechanical waves travel through mediums such as:

Mechanical Waves•May be longitudinal

•Or transverse

Types of Mechanical WavesTransverse Waves – energy

moves up and down or side to side while traveling forward

AmplitudeWavelength

Trough

Crest

How often = Frequency

Types of Mechanical WavesLongitudinal/Compression Waves – energy moves along the medium while traveling forward

WavelengthHow often = Frequency

Types of Waves: http://www.youtube.com/watch?v=

Rbuhdo0AZDU

Mechanical WavesTransverse Longitudinal

•Has wavelength, frequency, and amplitude

•Energy travels forward but moves up and down/side to side

•Has wavelength and frequency

•Energy travels forward in pulses

Put the following waves under the correct category:•A wave at a ball game•Guitar string•Slinky•Flag waving in the wind•Sound wave•Shaking a rope•Water wave

II. Mechanical WavesLongitudinal Transverse

•Slinky•Sound wave•Water wave

•A wave at a ball game

•Guitar string•Flag waving in the wind

•Shaking a rope•Water wave

Electromagnetic Waves – Light!

3 m 2

2 m 3 mv = f λ v =1.5 m/s

GUESS FORMULA:G = Givens - write them all down with symbols, numbers and units

U = Unknown - write down the unknown with a question mark

E = Equation - write down the equation or equations that apply in the problem solve the equation(s) for the desired unknown

S = Substitute - substitute the given information into the solved equation

S = Solve - solve numerically, paying attention to units identify the final answer by circling, boxing, or underlining it clearly check the final answer to be sure it makes sense